CVE-2026-14187

Tutor LMS < 4.0.6 - Instructor+ Cross-Instructor Private Course Disclosure via IDOR

The Tutor LMS WordPress plugin before 4.0.6 does not enforce per-object ownership checks on its course content type, allowing any user with the instructor role to read the content of private courses belonging to other instructors.

We have discovered 8,891 live websites that are affected by CVE-2026-14187.

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Affected Software

Product  Tutor LMS
Category Learning Management System
Vulnerable Domains8,891 live websites (100% of Tutor LMS install base)
Vulnerable Versions
  • from 0 through 4.0.6
Vulnerable Versions Count132 versions ( 100% of all versions)


Common Weakness Enumeration

CWE-639 Authorization Bypass Through User-Controlled Key



Details

  • Published - Aug 22, 2026
  • Updated - Aug 23, 2026

Credits

  • Mustafa Ahmed (finder)
  • WPScan (coordinator)

Website Distribution by Country

Number of websites using CVE-2026-14187
United States2,522 websites


Germany682 websites
Poland448 websites
France432 websites
Cyprus431 websites
GB414 websites
India410 websites
Brazil321 websites
Spain259 websites
Italy243 websites

Website Distribution by TLD

Number of websites using CVE-2026-14187
.com4,142 websites
.org601 websites
.pl355 websites
.com.br284 websites
.de214 websites
.net179 websites
.it167 websites
.fr151 websites
.co.uk147 websites
.nl120 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-14187

Top websites that are affected by CVE-2026-14187. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*******.org United States**,***
**********.com United States**,***
*****************.com GB**,***
***************.org United States**,***
*************.org United States**,***
**********.com GB**,***
********************.com United States***,***
*****.com France***,***
********.tech United States***,***
**************.com Spain***,***
See full domain list

FAQ

CVE-2026-14187 is Authorization Bypass Through User-Controlled Key in Tutor LMS
A total of 8,891 websites have been identified as vulnerable to CVE-2026-14187, based on global website indexing conducted by WebTechSurvey.
The Tutor LMS is affected by the CVE-2026-14187 vulnerability.
Tutor LMS versions up to 4.0.6 are vulnerable to CVE-2026-14187.
CVE-2026-14187 is resolved in version 4.0.6 of Tutor LMS.